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[Edited_by_A._Ciancio,_C.N.R.,_Bari,_Italy_and_K.(Bookos.org)

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212<br />

M.S.T. ABBAS<br />

rhinoceros but it has been proved that the weevil attacks healthy <strong>and</strong> uninfested<br />

palms (personal observations). To oviposit, the female uses the rostrum to bore<br />

into the tissues, mainly under the leaf base, to form a hole in which the eggs are<br />

laid, then the hole is cemented to protect them from natural enemies.<br />

Figure 1. Life cycle of the Red Palm weevil, Rhynchophorus ferrugineus.<br />

3.2.2. Feeding<br />

RPWs feeding takes place on the soft portions of the palm. In the field, the<br />

weevils select a suitable site with the help of their antennae <strong>and</strong> thrust in their<br />

long rostrum at that spot, to feed on the juice. The feeding scars are quite<br />

superficial <strong>and</strong> can be readily differentiated from the oviposition holes which are<br />

deeper (Nirula, 1956). In the laboratory, when weevils feed on pieces of sugarcane<br />

or palms it was noticed that they grind such blocks <strong>by</strong> their mouth parts,<br />

sucking the juice <strong>and</strong> discarding the remains as ground material (personal<br />

observations).

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